EP0936091B1 - Installation de ventilation forcée, notamment pour véhicule - Google Patents

Installation de ventilation forcée, notamment pour véhicule Download PDF

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Publication number
EP0936091B1
EP0936091B1 EP99400241A EP99400241A EP0936091B1 EP 0936091 B1 EP0936091 B1 EP 0936091B1 EP 99400241 A EP99400241 A EP 99400241A EP 99400241 A EP99400241 A EP 99400241A EP 0936091 B1 EP0936091 B1 EP 0936091B1
Authority
EP
European Patent Office
Prior art keywords
blowing
central
peripheral
devices
jet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99400241A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0936091A1 (fr
Inventor
Pierre Florent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Regie Autonome des Transports Parisiens
Original Assignee
Regie Autonome des Transports Parisiens
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Publication date
Application filed by Regie Autonome des Transports Parisiens filed Critical Regie Autonome des Transports Parisiens
Publication of EP0936091A1 publication Critical patent/EP0936091A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/34—Nozzles; Air-diffusers
    • B60H1/3457—Outlets providing a vortex, i.e. a spirally wound air flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/34—Nozzles; Air-diffusers
    • B60H1/3407—Nozzles; Air-diffusers providing an air stream in a fixed direction, e.g. using a grid or porous panel

Definitions

  • the invention relates to the ventilation of spaces, for example the space intended for travelers in road or rail vehicles, and more particularly a forced ventilation system comprising a blowing unit or several independent air supply which can be distributed in the space to be ventilated according to the dimensions of this space.
  • the fans are noisy, the flap glass only allows a small opening, sliding windows cannot be used at opening due to the risk of accidents, roof hatches are only effective for a speed of vehicle above 20 km / h approximately, and air conditioning systems are expensive both at manufacturing and mounting than operating (sensitive energy overconsumption, and maintenance sensitive).
  • the invention aims to remedy these disadvantages and for this purpose concerns an installation of forced ventilation especially for vehicles, comprising at minus one blowing unit including a fan motor and blowing devices such as nozzles, installation characterized in that at each fan, a blowing group including a central blowing device and at least two peripheral blowing devices distributed around the central blowing device, the blowing have a tubular casing and a guide blower housed in the envelope and comprising at least three air jet guide ramps each extending, going from upstream to downstream of the blowing devices, first in a radial plane, then helically along a straight part of an axis approximately central of the blowing device.
  • the helical shape of the guide ramp, or guide rails is at the origin of a jet more flourished as the straight jets, and having a greater turbulent diffusion, which allows obtain lower speeds than a conventional jet at the same distance from the mouth of the blowing.
  • obtaining a speed of uniform blowing at a given distance as well as the ventilated area are essentially dependent on the angular output parameter of the helicoid as well as the angle of the axis of the peripheral jets relative to that of the central jet, the jets leaving the devices to helical ramp according to a configuration approximately frustoconical, and the inclination downstream of the blowing devices peripheral relative to the blowing device central, allow to obtain a correct diffusion in a very open solid angle, and jets can be put in interaction in order to develop and standardize the air velocity in a larger volume dimensions than with conventional techniques.
  • the installation is made up, depending on the dimensions of the space to be ventilated, one or more several blowing units each comprising a fan motor to which a single group of blowing devices, the fan can be low power and thus little noise.
  • Installation of forced ventilation according to the invention is more particularly intended for space ventilation interior of vehicles; it includes a unit of blowing, or several blowing units suitably distributed according to configuration space to ventilate, to introduce into the vehicle, as ventilation gas, air taken from outside of it.
  • the blowing units each include a fan motor with a volute whose output is connected, directly or by a connecting pipe can be very short, at the entrance of a group of blowing devices such as nozzles.
  • Figures 1a, 2a and 3a show such a group blowing devices, which includes a nozzle control unit 1 and four peripheral nozzles 2 distributed at 90 ° around the central nozzle, extending a manifold 3 tubular intended to be connected to the connection or directly to the fan; this collector has for this purpose a connection region 31 cylindrical with circular straight section and a base 32 carrying the nozzles 1, 2.
  • nozzles 1, 2 have a tubular casing 11, 21, an entry region of which opens into the manifold 3 through the base 32 and including a region of outlet protrudes out of the manifold, down if we refer to Figure 1 where the blowing group is represented in the position he occupies when he is fixed to the ceiling of a vehicle in order to blow ventilation air to the floor on the occupants.
  • the casing 11 of the central nozzle extends straight and extends the collector coaxially.
  • Number of peripheral blowing devices 2 is chosen in according to needs, for example groups comprising two peripheral nozzles 2 diametrically opposite on either side of a central nozzle 1 can suitable for a narrow, elongated space such as a hallway railway car in particular; on the other hand, for large spaces, the central blowing device 1 is surrounded by a greater number of peripheral blowing 2, for example four nozzles or more, evenly distributed or not along a circumference centered on the central axis X-X of the device central blowing; thus, Figures 1b, 2b and 3b show a group with six peripheral nozzles 2 distributed at 60 ° around the central nozzle 1 and presenting by elsewhere the same arrangement, the corresponding organs bearing the same reference numerals as in the figures 1a to 3a.
  • blowing devices in the form of nozzles have a blowing guide 4 ( Figures 4 to 7) so to guide the air jet passing through the nozzle helically at least in the exit region thereof.
  • This guide supply air 4 is formed by one or more ramps first longitudinal then becoming helical formed here by one or more fins 41 extending from upstream to downstream first according to a plan radial and longitudinal then helical in shape the envelope 21, 31, around an axial rod 42 extending itself along at least part of the central axis of the blowing device.
  • the manifold 3 and the tubular casings 11, 21 of the nozzles are made in one piece; the casing 11 of the central nozzle extends rectilinear, and the envelopes 21 of the nozzles devices have an input region extending parallel to the casing 11 of the central nozzle, a obtuse angle bend, and an outlet region extending along the Y-Y part of the central axis which is inclined and diverges from the central axis X-X of the central nozzle going downstream; it's in at least part of this exit region that the guide extends blowing 4, constituted here by the fins 41 extending around a central rod 42, which is fixed in the envelope; we can note that these fins are fixed mounted inside the envelope and that rotational movement of these would generate noise important; the angle of inclination of the outer propeller of the helicoid with respect to the central axis or its angle ⁇ relative to the plane perpendicular to the central axis is also chosen as we will see below.
  • Peripheral blowing devices 2 may not naturally have an angled shape, but a straight shape over their entire length, their central axis then being itself straight and inclined compared to that of the central blowing device 1, from an angle which is as we have seen one of the parameters installation fundamentals.
  • the fan When the fan is in operation, it breathes, possibly through the connecting line, ventilation air in the blower group manifold, where the air is distributed to nozzles 1, 2.
  • the jet air is forced in a helical path, at the outlet from each nozzle it flourishes, forming approximately a truncated cone that is all the more flared as the angle ⁇ of the helicoid defined above is small; as a corollary, it will be noted that for the same initial flow, the speed in a point of the truncated cone is all the more weak as the angle ⁇ is small; if the jets from the nozzles have no interaction, uniform speeds require a relatively large angle of the outer helix of the helicoid relative to the central axis of the nozzle, hence a high pressure drop, and consequently a noisy fan unit in the flow range desired.
  • one mixes certain peripheral regions of neighboring jets know a region of each peripheral jet with a central jet region, and if possible two other regions each with a most peripheral jet region neighbor, making sure that the cone trunks of these jets cut slightly at their periphery.
  • the jets are derived from blowing, preferably the guide rails form helicals wound in the same direction, the antagonism of the tangential components of the velocities in the intersection region produces homogenization favorable mixing and resulting speeds in a volume located a few decimeters downstream of the guides blowing. How uniform speeds can be obtained by means of flow rates which are not too low, a small number of jets in each group allows meet the flow conditions ensuring ventilation in accordance with standards.
  • the distance and dimensions of the volume in which the speeds are uniform depend on the jet exit speed, the angle inclination of the outer propeller relative to the axis central nozzle or angle ⁇ from the plane perpendicular to this axis, by the angle ⁇ between the projection on a horizontal plane of the axes of the jets neighboring devices, of the angle ⁇ between the part straight Y-Y of the axis of the peripheral jets and the axis X-X of the central jet, and the number of fins in each nozzle.
  • Several different combinations can give neighboring results in a given volume.
  • the result obtained is suitable for the ventilation of a bus or coach, the installation using seven identical units allowing meet the imposed speed and flow conditions.
  • case N ° 3 illustrates, vis-à-vis cases N ° 1 and 2, the reduction in pressure losses from 80 mm of water to 15 mm of water, and noise from 75 db to 59 db, for the same efficiency, increasing the number of nozzles peripherals allowing the reduction of speeds initials.
  • angles ⁇ it is also possible to play on angles ⁇ to adapt the blowing unit to the length and width of the volume to be ventilated; for example, in the same group, the nozzles can be oriented at angles ⁇ different, depending on the shape of the volume at ventilate.
  • helicoids Taking into account the influence of the exit angle ⁇ helicoids and the advantage of being able to choose the best possible angle depending on needs, helicoids have a variable pitch, and more precisely a step whose length decreases from upstream to downstream ; thus the angle ⁇ itself decreases from upstream to downstream and we can get the desired angle ⁇ by cutting the helicoid in the appropriate location.
  • the installation according to the invention gives remarkable results thanks to its modularity which allows it to be adapted to geometry spaces varied, without sheath network for example in vehicle segments, with its adjustment possibilities of the zone at uniform speed for example by controlling the fan rotation speed, and at its adaptability which allows to comply with the constraints of a large number of situations; it is thus possible by example of ventilating irregularly shaped volumes, by installing different blowing groups too well regarding the number and orientation of blowing devices, that the number and angle of exit from the guide rails.
  • the diameter exterior of the propellers which is a function of noise for the desired flow rates can be included in a very wide range depending on the volumes to be ventilated, and desired speeds at the imposed distance.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP99400241A 1998-02-10 1999-02-03 Installation de ventilation forcée, notamment pour véhicule Expired - Lifetime EP0936091B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9801554A FR2774633B1 (fr) 1998-02-10 1998-02-10 Installation de ventilation forcee, notamment pour vehicule
FR9801554 1998-02-10

Publications (2)

Publication Number Publication Date
EP0936091A1 EP0936091A1 (fr) 1999-08-18
EP0936091B1 true EP0936091B1 (fr) 2002-05-02

Family

ID=9522795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99400241A Expired - Lifetime EP0936091B1 (fr) 1998-02-10 1999-02-03 Installation de ventilation forcée, notamment pour véhicule

Country Status (6)

Country Link
EP (1) EP0936091B1 (cs)
CZ (1) CZ294777B6 (cs)
DE (1) DE69901356T2 (cs)
ES (1) ES2175905T3 (cs)
FR (1) FR2774633B1 (cs)
PT (1) PT936091E (cs)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005061722A1 (de) * 2005-12-21 2007-06-28 Behr Gmbh & Co. Kg Luftausströmer mit Drallströmung
DE102006053836A1 (de) * 2006-11-14 2008-05-15 Behr Gmbh & Co. Kg Luftausströmer mit Drallströmung und konventioneller Strömung
DE102006054847A1 (de) * 2006-11-20 2008-05-21 Behr Gmbh & Co. Kg Luftausströmer mit einem Einsatz aus verformbaren Material
DE102007010795A1 (de) 2007-03-02 2008-09-04 Behr Gmbh & Co. Kg Luftausströmer mit Drallströmung und konventioneller Strömung
EP1972476A1 (de) 2007-03-20 2008-09-24 Behr GmbH & Co. KG Luftausströmer mit Drallströmung und gerichteter Strömung
WO2010006760A1 (de) * 2008-07-16 2010-01-21 Behr Gmbh & Co. Kg Luftausströmer mit drallströmung und gerichteter strömung

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPN20020005U1 (it) * 2002-01-31 2003-07-31 Plastal Spa Bocchetta di ventilazione, in particolare per autoveicoli.
EP1608522B1 (de) 2003-03-13 2018-10-31 MAHLE Behr GmbH & Co. KG Luftausströmer, insbesondere für ein kraftfahrzeug und ein zugehöriges luftausströmverfahren
FR2852891B1 (fr) * 2003-03-28 2006-07-14 Key Plastics Interiors Aerateur pour habitacle de vehicule, notamment d'automobile
JP4555291B2 (ja) 2003-08-11 2010-09-29 ベール ゲーエムベーハー ウント コー カーゲー 空気流出器、特に自動車のための空気流出器
DE10339339A1 (de) * 2003-08-25 2005-03-31 Behr Gmbh & Co. Kg Düse, insbesondere für ein Kraftfahrzeug
ATE417751T1 (de) * 2004-04-19 2009-01-15 Behr Gmbh & Co Kg Vorrichtung zur belüftung eines fahrzeugs
DE102004023495A1 (de) * 2004-05-10 2005-12-08 Behr Gmbh & Co. Kg Luftströmung, insbesondere für ein Kraftfahrzeug
DE102009039466A1 (de) * 2009-08-31 2011-03-03 GM Global Technology Operations, Inc., Detroit Personenanströmvorrichtung zur Anordnung innerhalb eines Kraftfahrzeugs
DE102014221580A1 (de) 2014-10-23 2016-04-28 Bayerische Motoren Werke Aktiengesellschaft Steuerbare Luftauslassdüse
JP2019085005A (ja) * 2017-11-08 2019-06-06 株式会社Ｓｏｋｅｎ 空気吹出装置
CN109910559B (zh) * 2019-03-13 2021-09-07 曼德电子电器有限公司 空调出风调节机构及调节方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1166026A (en) * 1967-04-18 1969-10-01 Sogeco Societa Generale Condiz Adjustable Stream-Lined Ventilator
DE7525560U (de) * 1975-08-12 1976-02-26 Karl Kaessbohrer Fahrzeugwerke Gmbh, 7900 Ulm BelUftungsgerät für Kraftfahrzeuge, insbesondere Omnibusse
DE2933083C2 (de) * 1979-08-16 1983-04-07 Kessler & Luch Gmbh, 6300 Giessen Luftauslaß für Klimaanlagen
US4751980A (en) * 1986-10-20 1988-06-21 Devane Harry M Sound attenuation apparatus
DE4139099C2 (de) * 1991-11-28 1997-04-30 Krantz Tkt Gmbh Luftauslaß

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005061722A1 (de) * 2005-12-21 2007-06-28 Behr Gmbh & Co. Kg Luftausströmer mit Drallströmung
DE102006053836A1 (de) * 2006-11-14 2008-05-15 Behr Gmbh & Co. Kg Luftausströmer mit Drallströmung und konventioneller Strömung
DE102006054847A1 (de) * 2006-11-20 2008-05-21 Behr Gmbh & Co. Kg Luftausströmer mit einem Einsatz aus verformbaren Material
DE102007010795A1 (de) 2007-03-02 2008-09-04 Behr Gmbh & Co. Kg Luftausströmer mit Drallströmung und konventioneller Strömung
EP1972476A1 (de) 2007-03-20 2008-09-24 Behr GmbH & Co. KG Luftausströmer mit Drallströmung und gerichteter Strömung
DE102007013868A1 (de) 2007-03-20 2008-09-25 Behr Gmbh & Co. Kg Luftausströmer mit Drallströmung und gerichteter Strömung
WO2010006760A1 (de) * 2008-07-16 2010-01-21 Behr Gmbh & Co. Kg Luftausströmer mit drallströmung und gerichteter strömung
DE102008033339A1 (de) 2008-07-16 2010-01-21 Behr Gmbh & Co. Kg Luftausströmer mit Drallströmung und gerichteter Strömung
US9802464B2 (en) 2008-07-16 2017-10-31 Mahle International Gmbh Air outlet with vortex flow and directed flow

Also Published As

Publication number Publication date
PT936091E (pt) 2002-10-31
CZ294777B6 (cs) 2005-03-16
FR2774633A1 (fr) 1999-08-13
DE69901356T2 (de) 2003-01-30
DE69901356D1 (de) 2002-06-06
CZ44299A3 (cs) 1999-08-11
EP0936091A1 (fr) 1999-08-18
ES2175905T3 (es) 2002-11-16
FR2774633B1 (fr) 2000-05-05

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